<div class="collection-item clearfix">
    <div class="course-item" 
        style="background: url(<%= IMG_BASE_URL+item.posterUrl%>) no-repeat; background-size:100% 100%;"
    >
    <h1 class="collection-tt"><%= item.title %> </h1>
    <a href="<%= item.qqQunLink %> " class="btn btn-info" target="_blank">加入学习</a>
    </div>
    <% for (let i = 0; i < item.courseDataList.length; i++) {
        const dataItem = item.courseDataList[i];
        %>  
        <%- include('../../common/courseItem/index.ejs',{
            item:dataItem
        })%>
        <% }  %> 
</div>